Compressed-air protective shield



' 1646103 Oct. 18,1927. B. Q PATRICK COMPRESSED AIR PROTECTIVE SH IELD Filed Feb. 16, 1927 Patented Oct. 18, 1927..

UNITED STATES PATENT OFFICE.

BYRON, o. ra'rnrcx, or @ESMOINES, Iowa.

coMrnnssEn-nm rao'rnc'rrvs SHIELD.

ap lication filedl'ebruary 1a; 192?. Serial m. 168,578.

The purpose of my invention is to provide a compressed air protective shield of simple, durable and inexpensive and eflicient con struction.

5 More particularly, it is my objectit'o pro vide a protective shield adapted to fit over the nose and mouth of the wearer and to;- provide a tube leading to the shield'for dis? tached'directly to. the air cleaner or to air' 9 supply hosefor air brushes yer the like or the kind used for spray painting.

With these and other objects in viewg my invention consists in the construction, ar rangement and oombmatlon of the VENOUS I parts of my compressed air protective shield, whereby the objects contemplated are attained, as-hereinafter more fully set forth,

pointed outin my claims, and illustrated 'in' the accompanying drawings, in which:

# Figure 1 is a perspective view'of a compressed ai1; protective shield embodying my nvention.

- Figure 2 isa detail, sectional view through the shield; and 6 Figure 3 is a rear elevation of 'the shield. In recent years, the practice of, applying paint by the sprayin method hasbecome c mmon. The paint, uco, lacquer, or other l quid material is sprayed through a'nozzle 0 ms ray gun by means of compressed air. e' practice involves considerable inconyenience for the painter who is compelled to breathe the fumes an the paint spray. With .the newiproduct known as duco, this spray 5 becomes sometimes almost unendurable. Masks of the respirator type are'extremely inconvenient to wear.

My device embodies theprincipleof sup-.

plying freshair to the operator andof driv- 0 mg a screen of air'away from his face for protecting, him. against theiumesand paint spray. In 'all plants using the spray method; of painting; there is supplied mechanism :Eor furnishing compresse air .andan "air cleaner. Y

I connect the flexible tube indicated in the accompanying drawings by the reference numeral '10, either with the air cleaner or with the hose supplying air to the spray gun.

Connected with the hose is apiece of.

piping 12, preferabl of copper or of some materlal, whichis p iable andcan be bent to different shapes. 1

The piping 12 has a portion 12 bent to a shape to fit over the back and top ofthe head. The connection 14 between the pipe 12 and the flexible tube 10 1s intended to be at the backof the head, and there is-mounted on the pipe 12 near the connection, a resilient*curved, head band 16 to fit against and around the back part of the head.

'At-the forward partof the pipe 12 are .formed the bentand rebent ortions 12", so that the pipe 12 may be-rea 'ly bent to fit the heads of difierent sizes and shapes.

From the bentv ortions 12", the pipe 12 extends downward y as at 12. 1

Supported on the [portion 12 of the tube -12 s another head clamp or head band 18 of resilient 'material. -This head band and the tube Y ortion 12 support the vizor 20 of light weig t material. At the outer edge of the vizor 20 is an air dispensingtube 22 arranged in communication with the tube section 12 by means of a branch 24.

The vizor pipe 22 has a series of vent holes 26 'for discharging jets of air forwardly and downwardly and laterally and downwardly as shown for thus affording a fresh air screen in front of the eyes of the wearer.

I provide a shield for the mouth and nose :of the wearer, comprising a cup-sha ed member 28 having at its-free a flexl le flap 30; preferably of rubber, apted to fit snugly to the face.

- Connected with the lower end of the tube section 12 is a tube '32, which is coiled spirally around the shield 28, as shown in Fig ures1and2. v

The extreme end of the tube 32 is extended through the wall of theshield 28' and termi 'IIMZG'SHI a portion 32 closed at its end.

A short nozzle-34 extends inwardly into the shield 28 as, shown in- Figure 2 for supplying fresh compressed air to the wearer.

In' the lower part of the tube 32 are holes: i 36 for emitting the surplus fresh air supplied to' the interior ofthe shield and t breath oflthe wearer. I

- The spiral tube 323s provided with a series of jetopenings 38 arranged as to throw jets of fresh air outwardly and away from the face of the wearer, in .a spray havrn generally the shape of a truncated cone wit its smaller end at the shield. The air emitted from the spiral tube 32 also forms a fresh air screen in front of the face of the wearer. My improved compressed air protective shield can be used in a great variety of ways and for many industrial purposes.

Assuming that it is to be used 111 a pamt shop, it will be understood that the tube 10 Where my protective shield is used in connection with the compressed air painting apparatus, it will be noted that whenever the air is supplied to the tube leadlng to the air gun, it will likewise be supplied to my apparatus, and whether the air gun is in operation or not, the fresh air will be supplied to the user of my. shield.

- When-the air to the-tube 10 is turned on, a screen of fresh air will be discharged from the holes 26 as indicated by the arrows at 26 for forming an air screen in frontof the eyes of the wearer. Likewise the series of 'jet holes 38 will send outan air Screen in front'of the shield proper.

It will thus be seen that I have provided acompre'ssed air protective shield to be worn as a headpiece by those who areengaged 1n the spray gun application of duco, lacquer or other liquid material used in the spraying process.

Incidentally, it may be said that the tube 32 has a sliding frictional engagement with the lower end of the tubesection 12, so that the parts may be readily separated.

The air supplying the operator from the usual pressure tank-passesthrough a small rubber or fabric hose attached to a pro erly constructed head gear at the back 0 operators head. This fabric tubing can also be attached .to the supply tube a short distance back of the spray gun. V

- The head gear is constructed preferably of a suitable size of copper, aluminum or'other practical tube material. The metal-tubing passing over the head, conforming to the shape of the head, is twisted in the form of a waved line or ogee at the forward point, terminating at a point above the nose, thus giving perfect ad ustment by expanding or contracting the head gear to fit any size 5 of head.

At a proper point in the back, a soft metal the or other somewhat resilient band is preferably 1 braised to the tube passing over the head. A similar band encircling the forehead is attached to the front part of the head gear tube. tirely encircle the head, but leave spaces open at each side for thus making a sort of adjustable helmet.

Attached to the main tube at the front is a specially devised vizor.

Inserted in the head tube at the front of the device is the tube, which is bent spirally around the nose and mouth shield, which latter is arranged to fit snugly to the face. And 'in the specially provided vizor tube are drilled minute holes so arranged that when air pressure isprovided, they cause an air screen.

Air for breathing purposes is furnished to the interior of the mouth and nose shield, thus enabling the operator at all times to breathe cool, pure air. The draft of air away from the shield draws away the surplus air. provided for breathing and the impure air, which has been breathed.

A device of this kind can be worn and will afford the operator proper protection withoutthe inconvenience inherent in the ordinary respiratory mask.

It will be understood that any suitable material, which is adapted for the purpose, may be employed in the manufacture of my device, and that it may be made in different sizes and shapes as may be desired for the purpose.

Changes may be made in the construction and arrangement of the various parts of the device without departing from the real spirit and purpose of my invention, and it is m intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, or different 'materials, which may be reasonably included within their sco e.

claim as my invention:

1. In a device of the class described, a shleld adapted to fit over the nose and mouth, a compressed air conductor leadin to the shield, means on" the shield, commumeating with said conductor for discharging a plurality ofjets of air away from the shield.

2. In a device of the class described, a shield adapted to fit over the nose and mouth, a compressed air conductor leadin to the shield, means on the shield, communicating with said conductor for discharging a plurality of jets of air away from the shield, and means for projecting a jet of air into the shield.

a device of the classdescribed, a shield adapted to fit over the nose and mouth, a compressed air conductor leading to the shield, means on the shield, communicating wlth said conductor for a plu- These bands do not enrality of jets of air away from the shield, and means for projecting a jet of air into the shield, said shield having an outlet adjacent to certain of said first ets.

4. In a device of'the class described, a

the shield, said shield having an outlet.-

5. In a device of the class described, a shield adapted to fit over the nose and moutn,

a compressed air conductor leading to the shield, means on the shield communicating with said conductor for discharging a plurality of jets of air away from the shield, means for projecting a et of air into the shield, said shield having an out-let, a vizor element adapted to rest on the forehead, having a transverse tube provided with discharge 0 enings directed outwardly and downwar 1y.

6. In a com ressed air protective shield, a head gear ma e of bendable tubin and head engaging means, means for supp ying compressed air to said tubing, avizor supported on said head gearing havin a tube communicating with said first tu e and provided with small holes for emitting jets of air downwardly and away from the face of the wearer, a mouth and nose shield, means communicating with said first tube for supplying air to the interior of said shield and directmg jets of air in a screen away from such shield.

Des Moines, Iowa, February 9, 1927.

BYRON, o. PATRICK. 

